Qt 5.8 | Qt Bluetooth | Bluetooth Low Energy Heart Listener Example | home.qml Example File

Qt 5.8.0 Reference Documentation

# home.qml Example File

heartlistener/assets/home.qml

      /***************************************************************************
      **
      ** Copyright (C) 2014 BlackBerry Limited. All rights reserved.
      ** Contact: http://www.qt.io/licensing/
      **
      ** This file is part of the examples of the QtBluetooth module of the Qt Toolkit.
      **
      ** $QT_BEGIN_LICENSE:BSD$
      ** You may use this file under the terms of the BSD license as follows:
      **
      ** "Redistribution and use in source and binary forms, with or without
      ** modification, are permitted provided that the following conditions are
      ** met:
      **   * Redistributions of source code must retain the above copyright
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      **   * Redistributions in binary form must reproduce the above copyright
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      **     contributors may be used to endorse or promote products derived
      **     from this software without specific prior written permission.
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      import QtQuick 2.0

      Rectangle {
          id: screen
          color: "#F0EBED"
          property string message: heartRate.message
          onMessageChanged: {
              if (heartRate.message != "Scanning for devices..." && heartRate.message != "Low Energy device found. Scanning for more...") {
                  background.visible = false;
                  demoMode.visible = true;
              }
              else {
                  demoMode.visible = false;
                  background.visible = true;
              }
          }

          Rectangle {
              id:select
              width: parent.width
              anchors.top: parent.top
              height: 80
              color: "#F0EBED"
              border.color: "#3870BA"
              border.width: 2
              radius: 10

              Text {
                  id: selectText
                  color: "#3870BA"
                  font.pixelSize: 34
                  anchors.centerIn: parent
                  text: "Select Device"
              }
          }

          Rectangle {
              id: spinner
              width: parent.width
              anchors.top: select.bottom
              anchors.bottom: demoMode.top
              visible: false
              color: "#F0EBED"
              z: 100

              Rectangle {
                  id: inside
                  anchors.centerIn: parent
                  Image {
                      id: background

                      width:100
                      height:100
                      anchors.horizontalCenter: parent.horizontalCenter

                      source: "busy_dark.png"
                      fillMode: Image.PreserveAspectFit
                      NumberAnimation on rotation { duration: 3000; from:0; to: 360; loops: Animation.Infinite}
                  }

                  Text {
                      id: infotext
                      anchors.horizontalCenter: parent.horizontalCenter
                      anchors.top: background.bottom
                      text: heartRate.message
                      color: "#8F8F8F"
                  }
              }
          }

          Component.onCompleted: {
              heartRate.deviceSearch();
              spinner.visible=true;
          }

          ListView {
              id: theListView
              width: parent.width
              onModelChanged: spinner.visible=false
              anchors.top: select.bottom
              anchors.bottom: demoMode.top
              model: heartRate.name

              delegate: Rectangle {
                  id: box
                  height:140
                  width: parent.width
                  color: "#3870BA"
                  border.color: "#F0EBED"
                  border.width: 5
                  radius: 15

                  MouseArea {
                      anchors.fill: parent
                      onPressed: { box.color= "#3265A7"; box.height=110}
                      onClicked: {
                          heartRate.connectToService(modelData.deviceAddress);
                          pageLoader.source="monitor.qml";
                      }
                  }

                  Text {
                      id: device
                      font.pixelSize: 30
                      text: modelData.deviceName
                      anchors.top: parent.top
                      anchors.topMargin: 5
                      anchors.horizontalCenter: parent.horizontalCenter
                      color: "#F0EBED"
                  }

                  Text {
                      id: deviceAddress
                      font.pixelSize: 30
                      text: modelData.deviceAddress
                      anchors.bottom: parent.bottom
                      anchors.bottomMargin: 5
                      anchors.horizontalCenter: parent.horizontalCenter
                      color: "#F0EBED"
                  }
              }
          }

          Button {
              id:demoMode
              buttonWidth: parent.width
              buttonHeight: 0.1*parent.height
              anchors.horizontalCenter: parent.horizontalCenter
              anchors.bottom: scanAgain.top
              text: "Run Demo"
              onButtonClick: {
                  heartRate.startDemo();
                  pageLoader.source="monitor.qml";
              }
          }

          Button {
              id:scanAgain
              buttonWidth: parent.width
              buttonHeight: 0.1*parent.height
              anchors.horizontalCenter: parent.horizontalCenter
              anchors.bottom: parent.bottom
              text: "Menu"
              onButtonClick: pageLoader.source="main.qml"
          }
      }